Cyproterone Acetate

Cyproterone acetate (CPA) is an androgen receptor antagonist. It binds to human androgen receptors (Ki = 14 nM) and inhibits dihydrotestosterone-induced androgen receptor activation in CV-1 cells (IC50 = 26 nM). CPA (30 mg/kg) decreases ventral prostate weight in castrated immature rats. It also suppresses accessory sexual glands and fertility in adult male rats when administered at a dose of 10 mg/kg. CPA (0.3 µM) also induces apoptosis in primary adult female rat hepatocytes. Formulations containing cyproterone acetate have been used in the treatment of androgenization in females.Formal Name: (1beta,2beta)-17-acetyloxy-6-chloro-1,2-dihydro-3'H-cyclopropa[1,2]pregna-1,4,6-triene-3,20-dione. CAS Number: 427-51-0. Synonyms: CPA, Cyprostat, NSC 81430, SH 714. Molecular Formula: C24H29ClO4. Formula Weight: 416.9. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 30 mg/ml, DMSO: 30 mg/ml, DMSO:PBS (pH 7.2) (1:3): 0.25 mg/ml, Ethanol: 10 mg/ml. lambdamax: 280 nm. SMILES: O=C1[C@H]2[C@H](C2)[C@@]3(C)C(C(Cl)=C[C@]4([H])[C@]3([H])CC[C@@]5(C)[C@@]4([H])CC[C@]5(OC(C)=O)C(C)=O)=C1. InChi Code: InChI=1S/C24H29ClO4/c1-12(26)24(29-13(2)27)8-6-16-14-10-20(25)19-11-21(28)15-9-18(15)23(19,4)17(14)5-7-22(16,24)3/h10-11,14-18H,5-9H2,1-4H3/t14-,15+,16-,17-,18-,22-,23-,24-/m0/s1. InChi Key: UWFYSQMTEOIJJG-FDTZYFLXSA-N.